5. FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Dec. 31, 2015

Financial Instruments.

Schedule of Fair value of financial assets and liabilities measured on a recurring basis

The fair value of financial assets measured on a recurring basis is as follows (in thousands):

			Fair Value Measurements at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets and Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
	December 31, 2015		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	6,219	$	6,219	$	—	$	—
Marketable securities		34,870		—		34,870		—
Total	$	41,089	$	6,219	$	34,870	$	—
			Fair Value Measurements at Reporting Date Using
			Quoted Prices in Active Markets for Identical Assets and Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
	March 31, 2015		(Level 1)		(Level 2)		(Level 3)
Assets:
Money market funds	$	4,409	$	4,409	$	—	$	—
Marketable securities		43,941		—		43,941		—
Total	$	48,350	$	4,409	$	43,941	$	—

Schedule of Available-for-sale investments

	December 31, 2015
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
State and municipal obligations	$	1,021	$	2	$	—	$	1,023
Corporate notes		3,425		—		(6)		3,419
Certificates of deposit		9,250		3		(5)		9,248
Foreign government obligations		2,692		—		(2)		2,690
Agency bonds		3,003		—		(2)		3,001
Total short-term investments	$	19,391	$	5	$	(15)	$	19,381
Long-term investments:
Corporate notes	$	2,276	$	—	$	(10)	$	2,266
Certificates of deposit		12,250		2		(29)		12,223
Agency bonds		1,000		—		—		1,000
Total long-term investments	$	15,526	$	2	$	(39)	$	15,489

	March 31, 2015
			Gross		Gross
			Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value
	(In thousands)
Short-term investments:
State and municipal obligations	$	6,810	$	—	$	—	$	6,810
Corporate notes		7,366		10		—		7,376
Agency bonds		1,006		—		—		1,006
Certificates of deposit		7,000		9		—		7,009
Total short-term investments	$	22,182	$	19	$	—	$	22,201
Long-term investments:
State and municipal obligations	$	1,053	$	4	$	—	$	1,057
Corporate notes		4,232		—		(10)		4,222
Certificates of deposit		9,750		24		(1)		9,773
Agency bonds		4,003		4		(2)		4,005
Foreign government obligations		2,684		—		(1)		2,683
Total long-term investments	$	21,722	$	32	$	(14)	$	21,740

Schedule of Contractual maturities of the available-for-sale non-equity investments

			Fair
	Cost		Value
	(In thousands)
Maturing within one year	$	19,391	$	19,381
Maturing in one to three years		15,526		15,489
Maturing in more than three years		—		—
	$	34,917	$	34,870